how valid name user and password ?[:confused:]

This should be a server matter, don't rely on a username/password combination in html / javascript.
You might build your own protected site but an lms also takes care of it.

i refer in a text input (user) and hidden input(password)

thank

hihi,
coincidence: see thread "Text Input Issue " from Amer [:)]

You can do this but the username and password will be fixed.
This has been bought up many times before and the real answer to making this work is to use a management system.